The 39 Clues

Plot Summary:

The story revolves around the Cahills - the most powerful family the world has ever known - the source of whose power is a mystery that can only be unraveled by assembling 39 clues hidden around the world throughout history. Combining reading with online gaming and collecting, this breakthrough concept is uniquely positioned to reach millions of young people who are readers, gamers, collectors, or all three, and encourage them to participate in the hunt for the 39 clues.